Final answer:
The verse comes from a poem by Percy Bysshe Shelley called "Ode to the West Wind." It emphasizes the eternal nature of the poet's words.
Step-by-step explanation:
The verse you are referring to is part of a poem by Percy Bysshe Shelley called "Ode to the West Wind." The full line is:
"Heaven and earth will pass away, but my words will never pass away."
In this line, Shelley is emphasizing the eternal nature of his words, suggesting that they will endure even after heaven and earth have ceased to exist. This line is a reflection of the poet's belief in the power and immortality of poetry.